Inabwy
appears in the traditional list of Bishops of
Llandaff. In fact, he
was probably the 7th Bishop of Ergyng. He was the son of Rhun ab Eneas Ledewig (the Breton),
though presumably his grandmother was a previous wife to St.
Gwen
Teirbron. In his youth, he became a follower of his (probably
maternal) cousin, St. Dyfrig, who was
somewhat his elder. He joined St.
Telio upon his return from Brittany and eventually, at the end of
his life, became Bishop of Ergyng, presiding in the very early 7th
century. He
is known to have founded at least three churches in Ergyng during his
episcopacy: Llanloudy, Llanbudgualan (Ballingham) and Llandinabo.